NEW DELHI: The BJP on Wednesday took a dig at the UPA government asking why the top four ministers were "sacrosanct". "I fail to understand what is so sacrosanct about the four ministers - defence, finance, external affairs and home - that they have not been moved during the Cabinet reshuffle. All of them have failed to perform," leader of Opposition in Rajya Sabha Arun Jaitley said.

He said Home Minister P Chidambaram had to answer several questions on his role in 2G spectrum scam as he had not opposed the allocation. "Chidambaram told the Prime Minister that the auction route should be adopted in future but there is no need to do so for the 2G spectrum allocation," Jaitley said.

He said the Prime Minister Manmohan Singh went by the 2003 decision that the allocation policy would be decided by the telecom and finance ministries. The BJP, which has been targeting Chidambaram, had demanded that he and Sibal be dropped from the Cabinet.

It had said criticised the Prime Minister over the reshuffle saying he had not touched the "tainted ministers". A party delegation, which is meeting the CBI director on Friday, is expected to seek a probe into Chidambaram's role. The party has been alleging that the finance minister was as responsible for the scam as DMK leader and former telecom minister A Raja.

Jaitley also criticised Finance Minister Pranab Mukherjee saying India had been one of the worst affected during the global recession and the government was responsible for it.

He castigated Defence Minister AK Antony and External Affairs Minister SM Krishna for non-performance. Besides the issue of corruption, the party is planning to take up price rise and the state of the economy during the monsoon session beginning on August 1.